单选题
—Hello, is Mary in?
—I'm sorry she ______ come to the phone because she is having a bath.
A、
won't
B、
mustn’t
C、
can't
D、
wouldn't
【正确答案】
C
【答案解析】
情态动词。答语意为：“她正在洗澡，不能来接电话。”
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